mirror of
https://github.com/rust-lang/rust.git
synced 2025-02-16 17:03:35 +00:00
Move item-related pretty printing functions to module
This commit is contained in:
David Tolnay
parent
b1605643e3
commit
07a0325137
@ -1,4 +1,5 @@
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mod expr;
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mod item;
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use crate::pp::Breaks::{Consistent, Inconsistent};
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use crate::pp::{self, Breaks};
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@ -11,7 +12,7 @@ use rustc_ast::util::comments::{gather_comments, Comment, CommentStyle};
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use rustc_ast::util::parser;
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use rustc_ast::{self as ast, BlockCheckMode, PatKind, RangeEnd, RangeSyntax};
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use rustc_ast::{attr, Term};
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use rustc_ast::{GenericArg, MacArgs, ModKind};
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use rustc_ast::{GenericArg, MacArgs};
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use rustc_ast::{GenericBound, SelfKind, TraitBoundModifier};
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use rustc_ast::{InlineAsmOperand, InlineAsmRegOrRegClass};
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use rustc_ast::{InlineAsmOptions, InlineAsmTemplatePiece};
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@ -212,10 +213,6 @@ pub fn literal_to_string(lit: token::Lit) -> String {
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out
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}
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fn visibility_qualified(vis: &ast::Visibility, s: &str) -> String {
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format!("{}{}", State::to_string(|s| s.print_visibility(vis)), s)
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}
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impl std::ops::Deref for State<'_> {
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type Target = pp::Printer;
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fn deref(&self) -> &Self::Target {
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@ -940,13 +937,6 @@ impl<'a> State<'a> {
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self.commasep_cmnt(b, exprs, |s, e| s.print_expr(e), |e| e.span)
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}
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crate fn print_foreign_mod(&mut self, nmod: &ast::ForeignMod, attrs: &[ast::Attribute]) {
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self.print_inner_attributes(attrs);
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for item in &nmod.items {
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self.print_foreign_item(item);
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}
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}
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pub fn print_opt_lifetime(&mut self, lifetime: &Option<ast::Lifetime>) {
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if let Some(lt) = *lifetime {
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self.print_lifetime(lt);
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@ -1059,343 +1049,6 @@ impl<'a> State<'a> {
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self.end();
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}
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crate fn print_foreign_item(&mut self, item: &ast::ForeignItem) {
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let ast::Item { id, span, ident, ref attrs, ref kind, ref vis, tokens: _ } = *item;
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self.ann.pre(self, AnnNode::SubItem(id));
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self.hardbreak_if_not_bol();
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self.maybe_print_comment(span.lo());
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self.print_outer_attributes(attrs);
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match kind {
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ast::ForeignItemKind::Fn(box ast::Fn { defaultness, sig, generics, body }) => {
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self.print_fn_full(sig, ident, generics, vis, *defaultness, body.as_deref(), attrs);
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}
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ast::ForeignItemKind::Static(ty, mutbl, body) => {
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let def = ast::Defaultness::Final;
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self.print_item_const(ident, Some(*mutbl), ty, body.as_deref(), vis, def);
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}
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ast::ForeignItemKind::TyAlias(box ast::TyAlias {
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defaultness,
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generics,
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bounds,
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ty,
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}) => {
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self.print_associated_type(
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ident,
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generics,
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bounds,
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ty.as_deref(),
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vis,
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*defaultness,
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);
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}
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ast::ForeignItemKind::MacCall(m) => {
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self.print_mac(m);
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if m.args.need_semicolon() {
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self.word(";");
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}
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}
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}
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self.ann.post(self, AnnNode::SubItem(id))
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}
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fn print_item_const(
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&mut self,
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ident: Ident,
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mutbl: Option<ast::Mutability>,
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ty: &ast::Ty,
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body: Option<&ast::Expr>,
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vis: &ast::Visibility,
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defaultness: ast::Defaultness,
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) {
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self.head("");
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self.print_visibility(vis);
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self.print_defaultness(defaultness);
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let leading = match mutbl {
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None => "const",
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Some(ast::Mutability::Not) => "static",
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Some(ast::Mutability::Mut) => "static mut",
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};
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self.word_space(leading);
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self.print_ident(ident);
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self.word_space(":");
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self.print_type(ty);
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if body.is_some() {
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self.space();
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}
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self.end(); // end the head-ibox
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if let Some(body) = body {
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self.word_space("=");
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self.print_expr(body);
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}
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self.word(";");
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self.end(); // end the outer cbox
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}
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fn print_associated_type(
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&mut self,
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ident: Ident,
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generics: &ast::Generics,
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bounds: &ast::GenericBounds,
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ty: Option<&ast::Ty>,
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vis: &ast::Visibility,
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defaultness: ast::Defaultness,
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) {
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self.head("");
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self.print_visibility(vis);
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self.print_defaultness(defaultness);
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self.word_space("type");
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self.print_ident(ident);
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self.print_generic_params(&generics.params);
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self.print_type_bounds(":", bounds);
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self.print_where_clause(&generics.where_clause);
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if let Some(ty) = ty {
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self.space();
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self.word_space("=");
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self.print_type(ty);
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}
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self.word(";");
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self.end(); // end inner head-block
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self.end(); // end outer head-block
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}
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/// Pretty-prints an item.
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crate fn print_item(&mut self, item: &ast::Item) {
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self.hardbreak_if_not_bol();
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self.maybe_print_comment(item.span.lo());
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self.print_outer_attributes(&item.attrs);
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self.ann.pre(self, AnnNode::Item(item));
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match item.kind {
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ast::ItemKind::ExternCrate(orig_name) => {
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self.head(visibility_qualified(&item.vis, "extern crate"));
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if let Some(orig_name) = orig_name {
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self.print_name(orig_name);
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self.space();
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self.word("as");
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self.space();
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}
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self.print_ident(item.ident);
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self.word(";");
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self.end(); // end inner head-block
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self.end(); // end outer head-block
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}
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ast::ItemKind::Use(ref tree) => {
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self.head(visibility_qualified(&item.vis, "use"));
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self.print_use_tree(tree);
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self.word(";");
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self.end(); // end inner head-block
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self.end(); // end outer head-block
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}
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ast::ItemKind::Static(ref ty, mutbl, ref body) => {
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let def = ast::Defaultness::Final;
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self.print_item_const(item.ident, Some(mutbl), ty, body.as_deref(), &item.vis, def);
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}
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ast::ItemKind::Const(def, ref ty, ref body) => {
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self.print_item_const(item.ident, None, ty, body.as_deref(), &item.vis, def);
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}
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ast::ItemKind::Fn(box ast::Fn { defaultness, ref sig, ref generics, ref body }) => {
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let body = body.as_deref();
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self.print_fn_full(
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sig,
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item.ident,
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generics,
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&item.vis,
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defaultness,
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body,
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&item.attrs,
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);
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}
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ast::ItemKind::Mod(unsafety, ref mod_kind) => {
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self.head(Self::to_string(|s| {
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s.print_visibility(&item.vis);
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s.print_unsafety(unsafety);
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s.word("mod");
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}));
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self.print_ident(item.ident);
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match mod_kind {
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ModKind::Loaded(items, ..) => {
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self.nbsp();
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self.bopen();
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self.print_inner_attributes(&item.attrs);
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for item in items {
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self.print_item(item);
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}
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let empty = item.attrs.is_empty() && items.is_empty();
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self.bclose(item.span, empty);
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}
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ModKind::Unloaded => {
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self.word(";");
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self.end(); // end inner head-block
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self.end(); // end outer head-block
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}
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}
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}
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ast::ItemKind::ForeignMod(ref nmod) => {
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self.head(Self::to_string(|s| {
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s.print_unsafety(nmod.unsafety);
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s.word("extern");
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}));
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if let Some(abi) = nmod.abi {
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self.print_literal(&abi.as_lit());
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self.nbsp();
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}
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self.bopen();
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self.print_foreign_mod(nmod, &item.attrs);
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let empty = item.attrs.is_empty() && nmod.items.is_empty();
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self.bclose(item.span, empty);
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}
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ast::ItemKind::GlobalAsm(ref asm) => {
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self.head(visibility_qualified(&item.vis, "global_asm!"));
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self.print_inline_asm(asm);
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self.end();
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}
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ast::ItemKind::TyAlias(box ast::TyAlias {
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defaultness,
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ref generics,
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ref bounds,
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ref ty,
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}) => {
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let ty = ty.as_deref();
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self.print_associated_type(
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item.ident,
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generics,
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bounds,
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ty,
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&item.vis,
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defaultness,
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);
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}
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ast::ItemKind::Enum(ref enum_definition, ref params) => {
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self.print_enum_def(enum_definition, params, item.ident, item.span, &item.vis);
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}
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ast::ItemKind::Struct(ref struct_def, ref generics) => {
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self.head(visibility_qualified(&item.vis, "struct"));
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self.print_struct(struct_def, generics, item.ident, item.span, true);
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}
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ast::ItemKind::Union(ref struct_def, ref generics) => {
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self.head(visibility_qualified(&item.vis, "union"));
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self.print_struct(struct_def, generics, item.ident, item.span, true);
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}
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ast::ItemKind::Impl(box ast::Impl {
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unsafety,
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polarity,
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defaultness,
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constness,
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ref generics,
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ref of_trait,
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ref self_ty,
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ref items,
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}) => {
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self.head("");
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self.print_visibility(&item.vis);
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self.print_defaultness(defaultness);
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self.print_unsafety(unsafety);
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self.word("impl");
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if generics.params.is_empty() {
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self.nbsp();
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} else {
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self.print_generic_params(&generics.params);
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self.space();
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}
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self.print_constness(constness);
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if let ast::ImplPolarity::Negative(_) = polarity {
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self.word("!");
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}
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if let Some(ref t) = *of_trait {
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self.print_trait_ref(t);
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self.space();
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self.word_space("for");
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}
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self.print_type(self_ty);
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self.print_where_clause(&generics.where_clause);
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self.space();
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self.bopen();
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self.print_inner_attributes(&item.attrs);
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for impl_item in items {
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self.print_assoc_item(impl_item);
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}
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let empty = item.attrs.is_empty() && items.is_empty();
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self.bclose(item.span, empty);
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}
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ast::ItemKind::Trait(box ast::Trait {
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is_auto,
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unsafety,
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ref generics,
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ref bounds,
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ref items,
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..
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}) => {
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self.head("");
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self.print_visibility(&item.vis);
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self.print_unsafety(unsafety);
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self.print_is_auto(is_auto);
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self.word_nbsp("trait");
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self.print_ident(item.ident);
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self.print_generic_params(&generics.params);
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let mut real_bounds = Vec::with_capacity(bounds.len());
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for b in bounds.iter() {
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if let GenericBound::Trait(ref ptr, ast::TraitBoundModifier::Maybe) = *b {
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self.space();
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self.word_space("for ?");
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self.print_trait_ref(&ptr.trait_ref);
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} else {
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real_bounds.push(b.clone());
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}
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}
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self.print_type_bounds(":", &real_bounds);
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self.print_where_clause(&generics.where_clause);
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self.word(" ");
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self.bopen();
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self.print_inner_attributes(&item.attrs);
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for trait_item in items {
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self.print_assoc_item(trait_item);
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}
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let empty = item.attrs.is_empty() && items.is_empty();
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self.bclose(item.span, empty);
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}
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ast::ItemKind::TraitAlias(ref generics, ref bounds) => {
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self.head(visibility_qualified(&item.vis, "trait"));
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self.print_ident(item.ident);
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self.print_generic_params(&generics.params);
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let mut real_bounds = Vec::with_capacity(bounds.len());
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// FIXME(durka) this seems to be some quite outdated syntax
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for b in bounds.iter() {
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if let GenericBound::Trait(ref ptr, ast::TraitBoundModifier::Maybe) = *b {
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self.space();
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self.word_space("for ?");
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self.print_trait_ref(&ptr.trait_ref);
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} else {
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real_bounds.push(b.clone());
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}
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}
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self.nbsp();
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self.print_type_bounds("=", &real_bounds);
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self.print_where_clause(&generics.where_clause);
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self.word(";");
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self.end(); // end inner head-block
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self.end(); // end outer head-block
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}
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ast::ItemKind::MacCall(ref mac) => {
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self.print_mac(mac);
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if mac.args.need_semicolon() {
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self.word(";");
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}
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}
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ast::ItemKind::MacroDef(ref macro_def) => {
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self.print_mac_def(macro_def, &item.ident, &item.span, |state| {
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state.print_visibility(&item.vis)
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});
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}
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}
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self.ann.post(self, AnnNode::Item(item))
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}
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fn print_trait_ref(&mut self, t: &ast::TraitRef) {
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self.print_path(&t.path, false, 0)
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}
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@ -1413,167 +1066,6 @@ impl<'a> State<'a> {
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self.print_trait_ref(&t.trait_ref)
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}
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crate fn print_enum_def(
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&mut self,
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enum_definition: &ast::EnumDef,
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generics: &ast::Generics,
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ident: Ident,
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span: rustc_span::Span,
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visibility: &ast::Visibility,
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) {
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self.head(visibility_qualified(visibility, "enum"));
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self.print_ident(ident);
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self.print_generic_params(&generics.params);
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self.print_where_clause(&generics.where_clause);
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self.space();
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self.print_variants(&enum_definition.variants, span)
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}
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crate fn print_variants(&mut self, variants: &[ast::Variant], span: rustc_span::Span) {
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self.bopen();
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for v in variants {
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self.space_if_not_bol();
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self.maybe_print_comment(v.span.lo());
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self.print_outer_attributes(&v.attrs);
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self.ibox(INDENT_UNIT);
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self.print_variant(v);
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self.word(",");
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self.end();
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self.maybe_print_trailing_comment(v.span, None);
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}
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let empty = variants.is_empty();
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self.bclose(span, empty)
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}
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crate fn print_visibility(&mut self, vis: &ast::Visibility) {
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match vis.kind {
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ast::VisibilityKind::Public => self.word_nbsp("pub"),
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ast::VisibilityKind::Crate(sugar) => match sugar {
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ast::CrateSugar::PubCrate => self.word_nbsp("pub(crate)"),
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ast::CrateSugar::JustCrate => self.word_nbsp("crate"),
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},
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ast::VisibilityKind::Restricted { ref path, .. } => {
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let path = Self::to_string(|s| s.print_path(path, false, 0));
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if path == "self" || path == "super" {
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self.word_nbsp(format!("pub({})", path))
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} else {
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self.word_nbsp(format!("pub(in {})", path))
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}
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}
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ast::VisibilityKind::Inherited => {}
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}
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}
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crate fn print_defaultness(&mut self, defaultness: ast::Defaultness) {
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if let ast::Defaultness::Default(_) = defaultness {
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self.word_nbsp("default");
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}
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}
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crate fn print_record_struct_body(&mut self, fields: &[ast::FieldDef], span: rustc_span::Span) {
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self.nbsp();
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self.bopen();
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let empty = fields.is_empty();
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if !empty {
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self.hardbreak_if_not_bol();
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for field in fields {
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self.hardbreak_if_not_bol();
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self.maybe_print_comment(field.span.lo());
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self.print_outer_attributes(&field.attrs);
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self.print_visibility(&field.vis);
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self.print_ident(field.ident.unwrap());
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self.word_nbsp(":");
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self.print_type(&field.ty);
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self.word(",");
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}
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}
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self.bclose(span, empty);
|
||||
}
|
||||
|
||||
crate fn print_struct(
|
||||
&mut self,
|
||||
struct_def: &ast::VariantData,
|
||||
generics: &ast::Generics,
|
||||
ident: Ident,
|
||||
span: rustc_span::Span,
|
||||
print_finalizer: bool,
|
||||
) {
|
||||
self.print_ident(ident);
|
||||
self.print_generic_params(&generics.params);
|
||||
match struct_def {
|
||||
ast::VariantData::Tuple(..) | ast::VariantData::Unit(..) => {
|
||||
if let ast::VariantData::Tuple(..) = struct_def {
|
||||
self.popen();
|
||||
self.commasep(Inconsistent, struct_def.fields(), |s, field| {
|
||||
s.maybe_print_comment(field.span.lo());
|
||||
s.print_outer_attributes(&field.attrs);
|
||||
s.print_visibility(&field.vis);
|
||||
s.print_type(&field.ty)
|
||||
});
|
||||
self.pclose();
|
||||
}
|
||||
self.print_where_clause(&generics.where_clause);
|
||||
if print_finalizer {
|
||||
self.word(";");
|
||||
}
|
||||
self.end();
|
||||
self.end(); // Close the outer-box.
|
||||
}
|
||||
ast::VariantData::Struct(ref fields, ..) => {
|
||||
self.print_where_clause(&generics.where_clause);
|
||||
self.print_record_struct_body(fields, span);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
crate fn print_variant(&mut self, v: &ast::Variant) {
|
||||
self.head("");
|
||||
self.print_visibility(&v.vis);
|
||||
let generics = ast::Generics::default();
|
||||
self.print_struct(&v.data, &generics, v.ident, v.span, false);
|
||||
if let Some(ref d) = v.disr_expr {
|
||||
self.space();
|
||||
self.word_space("=");
|
||||
self.print_expr(&d.value)
|
||||
}
|
||||
}
|
||||
|
||||
crate fn print_assoc_item(&mut self, item: &ast::AssocItem) {
|
||||
let ast::Item { id, span, ident, ref attrs, ref kind, ref vis, tokens: _ } = *item;
|
||||
self.ann.pre(self, AnnNode::SubItem(id));
|
||||
self.hardbreak_if_not_bol();
|
||||
self.maybe_print_comment(span.lo());
|
||||
self.print_outer_attributes(attrs);
|
||||
match kind {
|
||||
ast::AssocItemKind::Fn(box ast::Fn { defaultness, sig, generics, body }) => {
|
||||
self.print_fn_full(sig, ident, generics, vis, *defaultness, body.as_deref(), attrs);
|
||||
}
|
||||
ast::AssocItemKind::Const(def, ty, body) => {
|
||||
self.print_item_const(ident, None, ty, body.as_deref(), vis, *def);
|
||||
}
|
||||
ast::AssocItemKind::TyAlias(box ast::TyAlias { defaultness, generics, bounds, ty }) => {
|
||||
self.print_associated_type(
|
||||
ident,
|
||||
generics,
|
||||
bounds,
|
||||
ty.as_deref(),
|
||||
vis,
|
||||
*defaultness,
|
||||
);
|
||||
}
|
||||
ast::AssocItemKind::MacCall(m) => {
|
||||
self.print_mac(m);
|
||||
if m.args.need_semicolon() {
|
||||
self.word(";");
|
||||
}
|
||||
}
|
||||
}
|
||||
self.ann.post(self, AnnNode::SubItem(id))
|
||||
}
|
||||
|
||||
crate fn print_stmt(&mut self, st: &ast::Stmt) {
|
||||
self.maybe_print_comment(st.span.lo());
|
||||
match st.kind {
|
||||
@ -2012,55 +1504,6 @@ impl<'a> State<'a> {
|
||||
}
|
||||
}
|
||||
|
||||
fn print_fn_full(
|
||||
&mut self,
|
||||
sig: &ast::FnSig,
|
||||
name: Ident,
|
||||
generics: &ast::Generics,
|
||||
vis: &ast::Visibility,
|
||||
defaultness: ast::Defaultness,
|
||||
body: Option<&ast::Block>,
|
||||
attrs: &[ast::Attribute],
|
||||
) {
|
||||
if body.is_some() {
|
||||
self.head("");
|
||||
}
|
||||
self.print_visibility(vis);
|
||||
self.print_defaultness(defaultness);
|
||||
self.print_fn(&sig.decl, sig.header, Some(name), generics);
|
||||
if let Some(body) = body {
|
||||
self.nbsp();
|
||||
self.print_block_with_attrs(body, attrs);
|
||||
} else {
|
||||
self.word(";");
|
||||
}
|
||||
}
|
||||
|
||||
crate fn print_fn(
|
||||
&mut self,
|
||||
decl: &ast::FnDecl,
|
||||
header: ast::FnHeader,
|
||||
name: Option<Ident>,
|
||||
generics: &ast::Generics,
|
||||
) {
|
||||
self.print_fn_header_info(header);
|
||||
if let Some(name) = name {
|
||||
self.nbsp();
|
||||
self.print_ident(name);
|
||||
}
|
||||
self.print_generic_params(&generics.params);
|
||||
self.print_fn_params_and_ret(decl, false);
|
||||
self.print_where_clause(&generics.where_clause)
|
||||
}
|
||||
|
||||
crate fn print_fn_params_and_ret(&mut self, decl: &ast::FnDecl, is_closure: bool) {
|
||||
let (open, close) = if is_closure { ("|", "|") } else { ("(", ")") };
|
||||
self.word(open);
|
||||
self.commasep(Inconsistent, &decl.inputs, |s, param| s.print_param(param, is_closure));
|
||||
self.word(close);
|
||||
self.print_fn_ret_ty(&decl.output)
|
||||
}
|
||||
|
||||
crate fn print_asyncness(&mut self, asyncness: ast::Async) {
|
||||
if asyncness.is_async() {
|
||||
self.word_nbsp("async");
|
||||
@ -2161,83 +1604,6 @@ impl<'a> State<'a> {
|
||||
self.word(">");
|
||||
}
|
||||
|
||||
crate fn print_where_clause(&mut self, where_clause: &ast::WhereClause) {
|
||||
if where_clause.predicates.is_empty() && !where_clause.has_where_token {
|
||||
return;
|
||||
}
|
||||
|
||||
self.space();
|
||||
self.word_space("where");
|
||||
|
||||
for (i, predicate) in where_clause.predicates.iter().enumerate() {
|
||||
if i != 0 {
|
||||
self.word_space(",");
|
||||
}
|
||||
|
||||
self.print_where_predicate(predicate);
|
||||
}
|
||||
}
|
||||
|
||||
pub fn print_where_predicate(&mut self, predicate: &ast::WherePredicate) {
|
||||
match predicate {
|
||||
ast::WherePredicate::BoundPredicate(ast::WhereBoundPredicate {
|
||||
bound_generic_params,
|
||||
bounded_ty,
|
||||
bounds,
|
||||
..
|
||||
}) => {
|
||||
self.print_formal_generic_params(bound_generic_params);
|
||||
self.print_type(bounded_ty);
|
||||
self.print_type_bounds(":", bounds);
|
||||
}
|
||||
ast::WherePredicate::RegionPredicate(ast::WhereRegionPredicate {
|
||||
lifetime,
|
||||
bounds,
|
||||
..
|
||||
}) => {
|
||||
self.print_lifetime_bounds(*lifetime, bounds);
|
||||
}
|
||||
ast::WherePredicate::EqPredicate(ast::WhereEqPredicate { lhs_ty, rhs_ty, .. }) => {
|
||||
self.print_type(lhs_ty);
|
||||
self.space();
|
||||
self.word_space("=");
|
||||
self.print_type(rhs_ty);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
crate fn print_use_tree(&mut self, tree: &ast::UseTree) {
|
||||
match tree.kind {
|
||||
ast::UseTreeKind::Simple(rename, ..) => {
|
||||
self.print_path(&tree.prefix, false, 0);
|
||||
if let Some(rename) = rename {
|
||||
self.space();
|
||||
self.word_space("as");
|
||||
self.print_ident(rename);
|
||||
}
|
||||
}
|
||||
ast::UseTreeKind::Glob => {
|
||||
if !tree.prefix.segments.is_empty() {
|
||||
self.print_path(&tree.prefix, false, 0);
|
||||
self.word("::");
|
||||
}
|
||||
self.word("*");
|
||||
}
|
||||
ast::UseTreeKind::Nested(ref items) => {
|
||||
if tree.prefix.segments.is_empty() {
|
||||
self.word("{");
|
||||
} else {
|
||||
self.print_path(&tree.prefix, false, 0);
|
||||
self.word("::{");
|
||||
}
|
||||
self.commasep(Inconsistent, &items, |this, &(ref tree, _)| {
|
||||
this.print_use_tree(tree)
|
||||
});
|
||||
self.word("}");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub fn print_mutability(&mut self, mutbl: ast::Mutability, print_const: bool) {
|
||||
match mutbl {
|
||||
ast::Mutability::Mut => self.word_nbsp("mut"),
|
||||
|
||||
644
compiler/rustc_ast_pretty/src/pprust/state/item.rs
Normal file
644
compiler/rustc_ast_pretty/src/pprust/state/item.rs
Normal file
@ -0,0 +1,644 @@
|
||||
use crate::pp::Breaks::Inconsistent;
|
||||
use crate::pprust::state::{AnnNode, PrintState, State, INDENT_UNIT};
|
||||
|
||||
use rustc_ast as ast;
|
||||
use rustc_ast::GenericBound;
|
||||
use rustc_ast::ModKind;
|
||||
use rustc_span::symbol::Ident;
|
||||
|
||||
fn visibility_qualified(vis: &ast::Visibility, s: &str) -> String {
|
||||
format!("{}{}", State::to_string(|s| s.print_visibility(vis)), s)
|
||||
}
|
||||
|
||||
impl<'a> State<'a> {
|
||||
fn print_foreign_mod(&mut self, nmod: &ast::ForeignMod, attrs: &[ast::Attribute]) {
|
||||
self.print_inner_attributes(attrs);
|
||||
for item in &nmod.items {
|
||||
self.print_foreign_item(item);
|
||||
}
|
||||
}
|
||||
|
||||
fn print_foreign_item(&mut self, item: &ast::ForeignItem) {
|
||||
let ast::Item { id, span, ident, ref attrs, ref kind, ref vis, tokens: _ } = *item;
|
||||
self.ann.pre(self, AnnNode::SubItem(id));
|
||||
self.hardbreak_if_not_bol();
|
||||
self.maybe_print_comment(span.lo());
|
||||
self.print_outer_attributes(attrs);
|
||||
match kind {
|
||||
ast::ForeignItemKind::Fn(box ast::Fn { defaultness, sig, generics, body }) => {
|
||||
self.print_fn_full(sig, ident, generics, vis, *defaultness, body.as_deref(), attrs);
|
||||
}
|
||||
ast::ForeignItemKind::Static(ty, mutbl, body) => {
|
||||
let def = ast::Defaultness::Final;
|
||||
self.print_item_const(ident, Some(*mutbl), ty, body.as_deref(), vis, def);
|
||||
}
|
||||
ast::ForeignItemKind::TyAlias(box ast::TyAlias {
|
||||
defaultness,
|
||||
generics,
|
||||
bounds,
|
||||
ty,
|
||||
}) => {
|
||||
self.print_associated_type(
|
||||
ident,
|
||||
generics,
|
||||
bounds,
|
||||
ty.as_deref(),
|
||||
vis,
|
||||
*defaultness,
|
||||
);
|
||||
}
|
||||
ast::ForeignItemKind::MacCall(m) => {
|
||||
self.print_mac(m);
|
||||
if m.args.need_semicolon() {
|
||||
self.word(";");
|
||||
}
|
||||
}
|
||||
}
|
||||
self.ann.post(self, AnnNode::SubItem(id))
|
||||
}
|
||||
|
||||
fn print_item_const(
|
||||
&mut self,
|
||||
ident: Ident,
|
||||
mutbl: Option<ast::Mutability>,
|
||||
ty: &ast::Ty,
|
||||
body: Option<&ast::Expr>,
|
||||
vis: &ast::Visibility,
|
||||
defaultness: ast::Defaultness,
|
||||
) {
|
||||
self.head("");
|
||||
self.print_visibility(vis);
|
||||
self.print_defaultness(defaultness);
|
||||
let leading = match mutbl {
|
||||
None => "const",
|
||||
Some(ast::Mutability::Not) => "static",
|
||||
Some(ast::Mutability::Mut) => "static mut",
|
||||
};
|
||||
self.word_space(leading);
|
||||
self.print_ident(ident);
|
||||
self.word_space(":");
|
||||
self.print_type(ty);
|
||||
if body.is_some() {
|
||||
self.space();
|
||||
}
|
||||
self.end(); // end the head-ibox
|
||||
if let Some(body) = body {
|
||||
self.word_space("=");
|
||||
self.print_expr(body);
|
||||
}
|
||||
self.word(";");
|
||||
self.end(); // end the outer cbox
|
||||
}
|
||||
|
||||
fn print_associated_type(
|
||||
&mut self,
|
||||
ident: Ident,
|
||||
generics: &ast::Generics,
|
||||
bounds: &ast::GenericBounds,
|
||||
ty: Option<&ast::Ty>,
|
||||
vis: &ast::Visibility,
|
||||
defaultness: ast::Defaultness,
|
||||
) {
|
||||
self.head("");
|
||||
self.print_visibility(vis);
|
||||
self.print_defaultness(defaultness);
|
||||
self.word_space("type");
|
||||
self.print_ident(ident);
|
||||
self.print_generic_params(&generics.params);
|
||||
self.print_type_bounds(":", bounds);
|
||||
self.print_where_clause(&generics.where_clause);
|
||||
if let Some(ty) = ty {
|
||||
self.space();
|
||||
self.word_space("=");
|
||||
self.print_type(ty);
|
||||
}
|
||||
self.word(";");
|
||||
self.end(); // end inner head-block
|
||||
self.end(); // end outer head-block
|
||||
}
|
||||
|
||||
/// Pretty-prints an item.
|
||||
crate fn print_item(&mut self, item: &ast::Item) {
|
||||
self.hardbreak_if_not_bol();
|
||||
self.maybe_print_comment(item.span.lo());
|
||||
self.print_outer_attributes(&item.attrs);
|
||||
self.ann.pre(self, AnnNode::Item(item));
|
||||
match item.kind {
|
||||
ast::ItemKind::ExternCrate(orig_name) => {
|
||||
self.head(visibility_qualified(&item.vis, "extern crate"));
|
||||
if let Some(orig_name) = orig_name {
|
||||
self.print_name(orig_name);
|
||||
self.space();
|
||||
self.word("as");
|
||||
self.space();
|
||||
}
|
||||
self.print_ident(item.ident);
|
||||
self.word(";");
|
||||
self.end(); // end inner head-block
|
||||
self.end(); // end outer head-block
|
||||
}
|
||||
ast::ItemKind::Use(ref tree) => {
|
||||
self.head(visibility_qualified(&item.vis, "use"));
|
||||
self.print_use_tree(tree);
|
||||
self.word(";");
|
||||
self.end(); // end inner head-block
|
||||
self.end(); // end outer head-block
|
||||
}
|
||||
ast::ItemKind::Static(ref ty, mutbl, ref body) => {
|
||||
let def = ast::Defaultness::Final;
|
||||
self.print_item_const(item.ident, Some(mutbl), ty, body.as_deref(), &item.vis, def);
|
||||
}
|
||||
ast::ItemKind::Const(def, ref ty, ref body) => {
|
||||
self.print_item_const(item.ident, None, ty, body.as_deref(), &item.vis, def);
|
||||
}
|
||||
ast::ItemKind::Fn(box ast::Fn { defaultness, ref sig, ref generics, ref body }) => {
|
||||
let body = body.as_deref();
|
||||
self.print_fn_full(
|
||||
sig,
|
||||
item.ident,
|
||||
generics,
|
||||
&item.vis,
|
||||
defaultness,
|
||||
body,
|
||||
&item.attrs,
|
||||
);
|
||||
}
|
||||
ast::ItemKind::Mod(unsafety, ref mod_kind) => {
|
||||
self.head(Self::to_string(|s| {
|
||||
s.print_visibility(&item.vis);
|
||||
s.print_unsafety(unsafety);
|
||||
s.word("mod");
|
||||
}));
|
||||
self.print_ident(item.ident);
|
||||
|
||||
match mod_kind {
|
||||
ModKind::Loaded(items, ..) => {
|
||||
self.nbsp();
|
||||
self.bopen();
|
||||
self.print_inner_attributes(&item.attrs);
|
||||
for item in items {
|
||||
self.print_item(item);
|
||||
}
|
||||
let empty = item.attrs.is_empty() && items.is_empty();
|
||||
self.bclose(item.span, empty);
|
||||
}
|
||||
ModKind::Unloaded => {
|
||||
self.word(";");
|
||||
self.end(); // end inner head-block
|
||||
self.end(); // end outer head-block
|
||||
}
|
||||
}
|
||||
}
|
||||
ast::ItemKind::ForeignMod(ref nmod) => {
|
||||
self.head(Self::to_string(|s| {
|
||||
s.print_unsafety(nmod.unsafety);
|
||||
s.word("extern");
|
||||
}));
|
||||
if let Some(abi) = nmod.abi {
|
||||
self.print_literal(&abi.as_lit());
|
||||
self.nbsp();
|
||||
}
|
||||
self.bopen();
|
||||
self.print_foreign_mod(nmod, &item.attrs);
|
||||
let empty = item.attrs.is_empty() && nmod.items.is_empty();
|
||||
self.bclose(item.span, empty);
|
||||
}
|
||||
ast::ItemKind::GlobalAsm(ref asm) => {
|
||||
self.head(visibility_qualified(&item.vis, "global_asm!"));
|
||||
self.print_inline_asm(asm);
|
||||
self.end();
|
||||
}
|
||||
ast::ItemKind::TyAlias(box ast::TyAlias {
|
||||
defaultness,
|
||||
ref generics,
|
||||
ref bounds,
|
||||
ref ty,
|
||||
}) => {
|
||||
let ty = ty.as_deref();
|
||||
self.print_associated_type(
|
||||
item.ident,
|
||||
generics,
|
||||
bounds,
|
||||
ty,
|
||||
&item.vis,
|
||||
defaultness,
|
||||
);
|
||||
}
|
||||
ast::ItemKind::Enum(ref enum_definition, ref params) => {
|
||||
self.print_enum_def(enum_definition, params, item.ident, item.span, &item.vis);
|
||||
}
|
||||
ast::ItemKind::Struct(ref struct_def, ref generics) => {
|
||||
self.head(visibility_qualified(&item.vis, "struct"));
|
||||
self.print_struct(struct_def, generics, item.ident, item.span, true);
|
||||
}
|
||||
ast::ItemKind::Union(ref struct_def, ref generics) => {
|
||||
self.head(visibility_qualified(&item.vis, "union"));
|
||||
self.print_struct(struct_def, generics, item.ident, item.span, true);
|
||||
}
|
||||
ast::ItemKind::Impl(box ast::Impl {
|
||||
unsafety,
|
||||
polarity,
|
||||
defaultness,
|
||||
constness,
|
||||
ref generics,
|
||||
ref of_trait,
|
||||
ref self_ty,
|
||||
ref items,
|
||||
}) => {
|
||||
self.head("");
|
||||
self.print_visibility(&item.vis);
|
||||
self.print_defaultness(defaultness);
|
||||
self.print_unsafety(unsafety);
|
||||
self.word("impl");
|
||||
|
||||
if generics.params.is_empty() {
|
||||
self.nbsp();
|
||||
} else {
|
||||
self.print_generic_params(&generics.params);
|
||||
self.space();
|
||||
}
|
||||
|
||||
self.print_constness(constness);
|
||||
|
||||
if let ast::ImplPolarity::Negative(_) = polarity {
|
||||
self.word("!");
|
||||
}
|
||||
|
||||
if let Some(ref t) = *of_trait {
|
||||
self.print_trait_ref(t);
|
||||
self.space();
|
||||
self.word_space("for");
|
||||
}
|
||||
|
||||
self.print_type(self_ty);
|
||||
self.print_where_clause(&generics.where_clause);
|
||||
|
||||
self.space();
|
||||
self.bopen();
|
||||
self.print_inner_attributes(&item.attrs);
|
||||
for impl_item in items {
|
||||
self.print_assoc_item(impl_item);
|
||||
}
|
||||
let empty = item.attrs.is_empty() && items.is_empty();
|
||||
self.bclose(item.span, empty);
|
||||
}
|
||||
ast::ItemKind::Trait(box ast::Trait {
|
||||
is_auto,
|
||||
unsafety,
|
||||
ref generics,
|
||||
ref bounds,
|
||||
ref items,
|
||||
..
|
||||
}) => {
|
||||
self.head("");
|
||||
self.print_visibility(&item.vis);
|
||||
self.print_unsafety(unsafety);
|
||||
self.print_is_auto(is_auto);
|
||||
self.word_nbsp("trait");
|
||||
self.print_ident(item.ident);
|
||||
self.print_generic_params(&generics.params);
|
||||
let mut real_bounds = Vec::with_capacity(bounds.len());
|
||||
for b in bounds.iter() {
|
||||
if let GenericBound::Trait(ref ptr, ast::TraitBoundModifier::Maybe) = *b {
|
||||
self.space();
|
||||
self.word_space("for ?");
|
||||
self.print_trait_ref(&ptr.trait_ref);
|
||||
} else {
|
||||
real_bounds.push(b.clone());
|
||||
}
|
||||
}
|
||||
self.print_type_bounds(":", &real_bounds);
|
||||
self.print_where_clause(&generics.where_clause);
|
||||
self.word(" ");
|
||||
self.bopen();
|
||||
self.print_inner_attributes(&item.attrs);
|
||||
for trait_item in items {
|
||||
self.print_assoc_item(trait_item);
|
||||
}
|
||||
let empty = item.attrs.is_empty() && items.is_empty();
|
||||
self.bclose(item.span, empty);
|
||||
}
|
||||
ast::ItemKind::TraitAlias(ref generics, ref bounds) => {
|
||||
self.head(visibility_qualified(&item.vis, "trait"));
|
||||
self.print_ident(item.ident);
|
||||
self.print_generic_params(&generics.params);
|
||||
let mut real_bounds = Vec::with_capacity(bounds.len());
|
||||
// FIXME(durka) this seems to be some quite outdated syntax
|
||||
for b in bounds.iter() {
|
||||
if let GenericBound::Trait(ref ptr, ast::TraitBoundModifier::Maybe) = *b {
|
||||
self.space();
|
||||
self.word_space("for ?");
|
||||
self.print_trait_ref(&ptr.trait_ref);
|
||||
} else {
|
||||
real_bounds.push(b.clone());
|
||||
}
|
||||
}
|
||||
self.nbsp();
|
||||
self.print_type_bounds("=", &real_bounds);
|
||||
self.print_where_clause(&generics.where_clause);
|
||||
self.word(";");
|
||||
self.end(); // end inner head-block
|
||||
self.end(); // end outer head-block
|
||||
}
|
||||
ast::ItemKind::MacCall(ref mac) => {
|
||||
self.print_mac(mac);
|
||||
if mac.args.need_semicolon() {
|
||||
self.word(";");
|
||||
}
|
||||
}
|
||||
ast::ItemKind::MacroDef(ref macro_def) => {
|
||||
self.print_mac_def(macro_def, &item.ident, &item.span, |state| {
|
||||
state.print_visibility(&item.vis)
|
||||
});
|
||||
}
|
||||
}
|
||||
self.ann.post(self, AnnNode::Item(item))
|
||||
}
|
||||
|
||||
fn print_enum_def(
|
||||
&mut self,
|
||||
enum_definition: &ast::EnumDef,
|
||||
generics: &ast::Generics,
|
||||
ident: Ident,
|
||||
span: rustc_span::Span,
|
||||
visibility: &ast::Visibility,
|
||||
) {
|
||||
self.head(visibility_qualified(visibility, "enum"));
|
||||
self.print_ident(ident);
|
||||
self.print_generic_params(&generics.params);
|
||||
self.print_where_clause(&generics.where_clause);
|
||||
self.space();
|
||||
self.print_variants(&enum_definition.variants, span)
|
||||
}
|
||||
|
||||
fn print_variants(&mut self, variants: &[ast::Variant], span: rustc_span::Span) {
|
||||
self.bopen();
|
||||
for v in variants {
|
||||
self.space_if_not_bol();
|
||||
self.maybe_print_comment(v.span.lo());
|
||||
self.print_outer_attributes(&v.attrs);
|
||||
self.ibox(INDENT_UNIT);
|
||||
self.print_variant(v);
|
||||
self.word(",");
|
||||
self.end();
|
||||
self.maybe_print_trailing_comment(v.span, None);
|
||||
}
|
||||
let empty = variants.is_empty();
|
||||
self.bclose(span, empty)
|
||||
}
|
||||
|
||||
crate fn print_visibility(&mut self, vis: &ast::Visibility) {
|
||||
match vis.kind {
|
||||
ast::VisibilityKind::Public => self.word_nbsp("pub"),
|
||||
ast::VisibilityKind::Crate(sugar) => match sugar {
|
||||
ast::CrateSugar::PubCrate => self.word_nbsp("pub(crate)"),
|
||||
ast::CrateSugar::JustCrate => self.word_nbsp("crate"),
|
||||
},
|
||||
ast::VisibilityKind::Restricted { ref path, .. } => {
|
||||
let path = Self::to_string(|s| s.print_path(path, false, 0));
|
||||
if path == "self" || path == "super" {
|
||||
self.word_nbsp(format!("pub({})", path))
|
||||
} else {
|
||||
self.word_nbsp(format!("pub(in {})", path))
|
||||
}
|
||||
}
|
||||
ast::VisibilityKind::Inherited => {}
|
||||
}
|
||||
}
|
||||
|
||||
fn print_defaultness(&mut self, defaultness: ast::Defaultness) {
|
||||
if let ast::Defaultness::Default(_) = defaultness {
|
||||
self.word_nbsp("default");
|
||||
}
|
||||
}
|
||||
|
||||
fn print_record_struct_body(&mut self, fields: &[ast::FieldDef], span: rustc_span::Span) {
|
||||
self.nbsp();
|
||||
self.bopen();
|
||||
|
||||
let empty = fields.is_empty();
|
||||
if !empty {
|
||||
self.hardbreak_if_not_bol();
|
||||
|
||||
for field in fields {
|
||||
self.hardbreak_if_not_bol();
|
||||
self.maybe_print_comment(field.span.lo());
|
||||
self.print_outer_attributes(&field.attrs);
|
||||
self.print_visibility(&field.vis);
|
||||
self.print_ident(field.ident.unwrap());
|
||||
self.word_nbsp(":");
|
||||
self.print_type(&field.ty);
|
||||
self.word(",");
|
||||
}
|
||||
}
|
||||
|
||||
self.bclose(span, empty);
|
||||
}
|
||||
|
||||
fn print_struct(
|
||||
&mut self,
|
||||
struct_def: &ast::VariantData,
|
||||
generics: &ast::Generics,
|
||||
ident: Ident,
|
||||
span: rustc_span::Span,
|
||||
print_finalizer: bool,
|
||||
) {
|
||||
self.print_ident(ident);
|
||||
self.print_generic_params(&generics.params);
|
||||
match struct_def {
|
||||
ast::VariantData::Tuple(..) | ast::VariantData::Unit(..) => {
|
||||
if let ast::VariantData::Tuple(..) = struct_def {
|
||||
self.popen();
|
||||
self.commasep(Inconsistent, struct_def.fields(), |s, field| {
|
||||
s.maybe_print_comment(field.span.lo());
|
||||
s.print_outer_attributes(&field.attrs);
|
||||
s.print_visibility(&field.vis);
|
||||
s.print_type(&field.ty)
|
||||
});
|
||||
self.pclose();
|
||||
}
|
||||
self.print_where_clause(&generics.where_clause);
|
||||
if print_finalizer {
|
||||
self.word(";");
|
||||
}
|
||||
self.end();
|
||||
self.end(); // Close the outer-box.
|
||||
}
|
||||
ast::VariantData::Struct(ref fields, ..) => {
|
||||
self.print_where_clause(&generics.where_clause);
|
||||
self.print_record_struct_body(fields, span);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
crate fn print_variant(&mut self, v: &ast::Variant) {
|
||||
self.head("");
|
||||
self.print_visibility(&v.vis);
|
||||
let generics = ast::Generics::default();
|
||||
self.print_struct(&v.data, &generics, v.ident, v.span, false);
|
||||
if let Some(ref d) = v.disr_expr {
|
||||
self.space();
|
||||
self.word_space("=");
|
||||
self.print_expr(&d.value)
|
||||
}
|
||||
}
|
||||
|
||||
fn print_assoc_item(&mut self, item: &ast::AssocItem) {
|
||||
let ast::Item { id, span, ident, ref attrs, ref kind, ref vis, tokens: _ } = *item;
|
||||
self.ann.pre(self, AnnNode::SubItem(id));
|
||||
self.hardbreak_if_not_bol();
|
||||
self.maybe_print_comment(span.lo());
|
||||
self.print_outer_attributes(attrs);
|
||||
match kind {
|
||||
ast::AssocItemKind::Fn(box ast::Fn { defaultness, sig, generics, body }) => {
|
||||
self.print_fn_full(sig, ident, generics, vis, *defaultness, body.as_deref(), attrs);
|
||||
}
|
||||
ast::AssocItemKind::Const(def, ty, body) => {
|
||||
self.print_item_const(ident, None, ty, body.as_deref(), vis, *def);
|
||||
}
|
||||
ast::AssocItemKind::TyAlias(box ast::TyAlias { defaultness, generics, bounds, ty }) => {
|
||||
self.print_associated_type(
|
||||
ident,
|
||||
generics,
|
||||
bounds,
|
||||
ty.as_deref(),
|
||||
vis,
|
||||
*defaultness,
|
||||
);
|
||||
}
|
||||
ast::AssocItemKind::MacCall(m) => {
|
||||
self.print_mac(m);
|
||||
if m.args.need_semicolon() {
|
||||
self.word(";");
|
||||
}
|
||||
}
|
||||
}
|
||||
self.ann.post(self, AnnNode::SubItem(id))
|
||||
}
|
||||
|
||||
fn print_fn_full(
|
||||
&mut self,
|
||||
sig: &ast::FnSig,
|
||||
name: Ident,
|
||||
generics: &ast::Generics,
|
||||
vis: &ast::Visibility,
|
||||
defaultness: ast::Defaultness,
|
||||
body: Option<&ast::Block>,
|
||||
attrs: &[ast::Attribute],
|
||||
) {
|
||||
if body.is_some() {
|
||||
self.head("");
|
||||
}
|
||||
self.print_visibility(vis);
|
||||
self.print_defaultness(defaultness);
|
||||
self.print_fn(&sig.decl, sig.header, Some(name), generics);
|
||||
if let Some(body) = body {
|
||||
self.nbsp();
|
||||
self.print_block_with_attrs(body, attrs);
|
||||
} else {
|
||||
self.word(";");
|
||||
}
|
||||
}
|
||||
|
||||
crate fn print_fn(
|
||||
&mut self,
|
||||
decl: &ast::FnDecl,
|
||||
header: ast::FnHeader,
|
||||
name: Option<Ident>,
|
||||
generics: &ast::Generics,
|
||||
) {
|
||||
self.print_fn_header_info(header);
|
||||
if let Some(name) = name {
|
||||
self.nbsp();
|
||||
self.print_ident(name);
|
||||
}
|
||||
self.print_generic_params(&generics.params);
|
||||
self.print_fn_params_and_ret(decl, false);
|
||||
self.print_where_clause(&generics.where_clause)
|
||||
}
|
||||
|
||||
crate fn print_fn_params_and_ret(&mut self, decl: &ast::FnDecl, is_closure: bool) {
|
||||
let (open, close) = if is_closure { ("|", "|") } else { ("(", ")") };
|
||||
self.word(open);
|
||||
self.commasep(Inconsistent, &decl.inputs, |s, param| s.print_param(param, is_closure));
|
||||
self.word(close);
|
||||
self.print_fn_ret_ty(&decl.output)
|
||||
}
|
||||
|
||||
fn print_where_clause(&mut self, where_clause: &ast::WhereClause) {
|
||||
if where_clause.predicates.is_empty() && !where_clause.has_where_token {
|
||||
return;
|
||||
}
|
||||
|
||||
self.space();
|
||||
self.word_space("where");
|
||||
|
||||
for (i, predicate) in where_clause.predicates.iter().enumerate() {
|
||||
if i != 0 {
|
||||
self.word_space(",");
|
||||
}
|
||||
|
||||
self.print_where_predicate(predicate);
|
||||
}
|
||||
}
|
||||
|
||||
pub fn print_where_predicate(&mut self, predicate: &ast::WherePredicate) {
|
||||
match predicate {
|
||||
ast::WherePredicate::BoundPredicate(ast::WhereBoundPredicate {
|
||||
bound_generic_params,
|
||||
bounded_ty,
|
||||
bounds,
|
||||
..
|
||||
}) => {
|
||||
self.print_formal_generic_params(bound_generic_params);
|
||||
self.print_type(bounded_ty);
|
||||
self.print_type_bounds(":", bounds);
|
||||
}
|
||||
ast::WherePredicate::RegionPredicate(ast::WhereRegionPredicate {
|
||||
lifetime,
|
||||
bounds,
|
||||
..
|
||||
}) => {
|
||||
self.print_lifetime_bounds(*lifetime, bounds);
|
||||
}
|
||||
ast::WherePredicate::EqPredicate(ast::WhereEqPredicate { lhs_ty, rhs_ty, .. }) => {
|
||||
self.print_type(lhs_ty);
|
||||
self.space();
|
||||
self.word_space("=");
|
||||
self.print_type(rhs_ty);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn print_use_tree(&mut self, tree: &ast::UseTree) {
|
||||
match tree.kind {
|
||||
ast::UseTreeKind::Simple(rename, ..) => {
|
||||
self.print_path(&tree.prefix, false, 0);
|
||||
if let Some(rename) = rename {
|
||||
self.space();
|
||||
self.word_space("as");
|
||||
self.print_ident(rename);
|
||||
}
|
||||
}
|
||||
ast::UseTreeKind::Glob => {
|
||||
if !tree.prefix.segments.is_empty() {
|
||||
self.print_path(&tree.prefix, false, 0);
|
||||
self.word("::");
|
||||
}
|
||||
self.word("*");
|
||||
}
|
||||
ast::UseTreeKind::Nested(ref items) => {
|
||||
if tree.prefix.segments.is_empty() {
|
||||
self.word("{");
|
||||
} else {
|
||||
self.print_path(&tree.prefix, false, 0);
|
||||
self.word("::{");
|
||||
}
|
||||
self.commasep(Inconsistent, &items, |this, &(ref tree, _)| {
|
||||
this.print_use_tree(tree)
|
||||
});
|
||||
self.word("}");
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user